/* ==========================================================================
   UNIFIED TAB SYSTEM (ADR-007)
   Consolidated tab navigation styles for consistency across all modules.
   ========================================================================== */

.tab-nav {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border, #e2e8f0);
    margin-bottom: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    background: var(--lux-surface, var(--wo-surface, #ffffff));
    border-radius: var(--wo-radius-lg, 0.75rem) var(--wo-radius-lg, 0.75rem) 0 0;
    padding: 0 var(--wo-gap-sm, 0.5rem);
}

.tab-nav::-webkit-scrollbar {
    display: none;
}

.tab-nav__item {
    display: flex;
    align-items: center;
    gap: var(--wo-gap-sm, 0.5rem);
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #64748b);
    text-decoration: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
    border-radius: var(--wo-radius-sm, 0.375rem) var(--wo-radius-sm, 0.375rem) 0 0;
    position: relative;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
}

.tab-nav__item:hover {
    color: var(--text-primary, #1e293b);
    background: var(--wo-hover-bg, rgba(0, 0, 0, 0.03));
}

.tab-nav__item:active {
    background: var(--wo-press-bg, rgba(0, 0, 0, 0.05));
}

.tab-nav__item:focus-visible {
    outline: 2px solid var(--primary, #3b82f6);
    outline-offset: -2px;
    z-index: 1;
}

.tab-nav__item--active {
    color: var(--primary, #3b82f6);
    border-bottom-color: var(--primary, #3b82f6);
    background: transparent;
}

.tab-nav__item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.tab-nav__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    font-size: 11px;
    font-weight: 600;
    background: var(--wo-surface-2, #f1f5f9);
    color: var(--wo-muted, #64748b);
    border-radius: 10px;
    transition: background 0.15s ease, color 0.15s ease;
}

.tab-nav__item--active .tab-nav__count {
    background: var(--primary-light, rgba(59, 130, 246, 0.1));
    color: var(--primary, #3b82f6);
}

/* Compact variant (sub-tabs for forms/edit screens) */
.tab-nav--compact {
    background: var(--bg-tertiary, #f8fafc);
    border-bottom: 1px solid var(--border, #e2e8f0);
    border-radius: 0;
    padding: 0 var(--wo-gap-xs, 0.25rem);
}

.tab-nav--compact .tab-nav__item {
    padding: 10px 16px;
    font-size: 13px;
    border-bottom-width: 2px;
}

.tab-nav--compact .tab-nav__item--active {
    background: var(--wo-surface, #ffffff);
    border-bottom-color: var(--primary, #3b82f6);
}

.tab-nav--compact .tab-nav__count {
    font-size: 10px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
}

/* Generic panel visibility helper (opt-in) */
.tab-panel[hidden] {
    display: none !important;
}

/* Responsive: wrap on mobile */
@media (max-width: 640px) {
    .tab-nav {
        flex-wrap: wrap;
        gap: 0.25rem;
        padding: 0.5rem;
        border-radius: 0;
    }
    
    .tab-nav__item {
        padding: 10px 14px;
        font-size: 13px;
        border-radius: var(--wo-radius-sm, 0.375rem);
        margin-bottom: 0;
        border-bottom: none;
    }
    
    .tab-nav__item--active {
        background: var(--primary-light, rgba(59, 130, 246, 0.1));
        border-bottom: none;
    }
    
    .tab-nav--compact {
        padding: 0.25rem;
    }
    
    .tab-nav--compact .tab-nav__item {
        padding: 8px 12px;
    }
}